[support.srcloc.obs]

# 17 Language support library [[support]](./#support)

## 17.8 Source location [[support.srcloc]](support.srcloc#obs)

### 17.8.2 Class source_location [[support.srcloc.class]](support.srcloc.class#support.srcloc.obs)

#### 17.8.2.3 Observers [support.srcloc.obs]

[🔗](#itemdecl:1)

`constexpr uint_least32_t line() const noexcept;
`

[1](#1)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/support.tex#L3807)

*Returns*: line_[.](#1.sentence-1)

[🔗](#itemdecl:2)

`constexpr uint_least32_t column() const noexcept;
`

[2](#2)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/support.tex#L3816)

*Returns*: column_[.](#2.sentence-1)

[🔗](#itemdecl:3)

`constexpr const char* file_name() const noexcept;
`

[3](#3)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/support.tex#L3825)

*Returns*: file_name_[.](#3.sentence-1)

[🔗](#itemdecl:4)

`constexpr const char* function_name() const noexcept;
`

[4](#4)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/support.tex#L3834)

*Returns*: function_name_[.](#4.sentence-1)